Firearm



A- L SAVAGE.

, FIREARM.

APPLICATION FILED MAY 6. I915.

1 ,3 20,57 8. Patented Nov. 4, 1919.

- 4 SHEETS-SHEET 1.

i0o J00 1006 HIS ATTURNEY A. J. SAVAGE.

I FIREARM.

APPLICATION FILED MAY 5. 19l5.

Patented Nov. 4, 1919.

4 SHEETS-SHEET 2.

HIS ATTORNEY A. J. SAVAGE.

FIREARM.

APPLICATION FILED MAY 6. I915.

Patented Nov. 4, 1919 4 SHEETSSHEET 3.

WI'i'NEISSEIS: NW

A. 1'. SAVAGE.

FIREARM. APPLICATION FILED MAY 6. 19:5. Patented NOV. 4, 1919. 8' 4 SHEETS-SHEET 4. 1,320,57 25'} 0* J06 100 w Z44 ///4 //fl,

I v wfi, I WITNESSES? my I W @ATTEIRNEY conveniently assembled and takenapart without the use of tools or implements other 7 than a simple punch or other device for dlsmrnu'aaorm savaee, or 'sm nmoo, canronm.

To all whom it may) concern Be it known that I, ARTHUR J OHN Samoa,

'a citizen of the United States, residing at San Diego, in the'county of San Diego and State of California,- have invented new and useful Improvements in Firearms, of which the following is a specification. This invention relates more particularly to small fire arms or pistols of the semi-automatie type, whereinfthe recoil and the d1s-' charge causes the extraction and e ection of the empty shell, the introduction of a fresh cartridge, and the cocking of the hammer and firing pin, all to the end that a mere subsequent-pull upon the trigger will ex plode the fresh cartridge and initiate a sequence of actions identical with that just stated. I

It is one object of the present inventionto provide a pistol 'or small fire arm oithe general typestated that may be readily and placing the pivots or center pins. To this end, a piece of wire, a nail or one 'of many common objects may be utilized, arid-it thus results that in case :the pistol-[becomes jammed-or in any respect gets outf'o'f order when in use in the field and remote--from a shop or kit of tools, the user may take down the pistol and remedy whatever cause of trouble there maybe. Such causes-are not likely to arise in the use of thi'siinjproved 'fire arm, but as do all fire arms this one requires periodical cleaning and it may be readily taken down, as stated, Without special tools, for that purpose.

A further particular object of the invention is to provide a small fire arm equipped.

with a safety devicewhereby the firing pin may be definitely spaced or removed or retracted from the cartridge and locked positively in such position, until a release is effected, thus preventing the possibility of inadvertent discharge of the cartridge by any jar, blow or application of force due to accidentor design. Other fire arms have been constructed with safety devices for locking the firing pin and hammer so the same could 9 not bemoved to discharge the cartridge, until released to that end. But in. such fire arms the firing pin is ordinarily in engagement with the cartridge giving rise to the danger of explosion of the latter should any Specification otletters Patent.

.- release-'ofthexfiring pin take place. I-

' tion, but to that type of fire arm inwhich the hammer is locked down. -In accordance with my invention thehammer is slightly moved .m a cocking direction, carrying with it the firing pin, and is thus locked, definite safety space being thus provided between the firing pin and the cartridge, preventing any possible inadvertent discharge of the cartridge while the safety device is operative.

A further particular object of the invention is to provide a means. of assembling the barrel with the breech block so that convenience attaches to the assembling and dis- Patented Nov. 4,1919. 'Application Med May a, 1915; Serial No. 26,800. I

connecting operations, means being provided a for holding thebarrel in place and holding the breech block slidably mounted upon the receiver. These .means include a compression element which prevents inadvertent disconnection or disassemblage of the breech block and receiver and barrel, and likewise opposes the recoil of the breech block, returning the breech block to normal position after cartridge ejection, and cartridge feed,

and hammer cooking. The fired cartridge is of cours'e'ejected on rearward movement of the breechblock under recoil, and a fresh cartridge is introduced on the forward movement of theoreech block under the action of this compression element. 2

v A further object of the invention is to provide means cooperating with the hammer and the sear which releases the hammer to actuate the firing pin, such means further cooperating with the trigger, and with means on the breech block, all to the end that as the breech block is retracted, a succeeding actuation of the sear is prevented, until the trigger has been released. It results that a sepa: rate trigger pull is necessary for each firing operation, which would not otherwise be the case without improved means of this character. It is these means which give the fire arm its semi-automatic character,

The invention has for general objects the provision of an improved semi-automatic as hereinafter described and as shown in the drawings and finally pointed out in claims.

In the drawings: L Figure 1 is a side elevation of a semiautomaticsmall fire arm constructed and organized in accordance with the invention; Fig. 2 is a central vertical sectional vlew of the same taken upon the line w m Fig. 3, and looking in the direction of the a pended arrows, theparts being shown 1n e positions assumed immediate y after firing and before the commencement of the recoil action;

Fig. 3 is a front end elevation of the fire arm shown in Fig. l;

F 1g. 4 1s a view similar to Fig. 2 wlth the parts in posltions assumed subsequent to firing and after completion of the recoilaction,

with the breech block, firing pin and ham-' mer in fully retracted positions;

Fig. 5 is a detail longitudinal sectional view through the breech block of the fire arm, parts being in elevation, the same being taken upon the line 00 m Fig. 1, looking in the direction of the appended arrows;

Fig. 6 is a. top plan view of the receiver of the fire arm, with the features carried and accommodated thereby, the breech block and barrel and means for holding the same in,

assemblage with' the receiver beingremoved, parts being broken away and sectioned for clearness of illustratlon;

. Fig. 7 is a longitudinal sectional "ie'a taken upon the line mw Fig. 6, and look ing in the direction'of the appended arrows;

Fig. 8 is a detail transverse sectional view, taken through the breech block upon the line as -m Fig. 5, and looking in the direction of the appended arizo-ws, parts being in elevation F ig. 9 is a detail longitudinal sectional view through the breech block, parts being in. elevation, taken upon the line mae, Fig. 5, andlooking in the direction of the appended arrows;

Fig. 10 is a view similar to Fig. 1, parts being broken away for clearness of illustration, of a modified form of construction embodying the invention, including. means whereby the barrel is caused to accompany the breech block throughout the operation of its retraction, to prevent exposure of the shell immediately after its explosion and prior to its extraction, thus eliminating the possibility of the shell bursting at the extraction opening;

Fig. llisa detail horizontal sectional view taken u on the line ta -m Fig. 10, and looking in the direction ofthe appended arrows;

Fi 12 is a detail vertical transverse sectiona view taken upon the line 'w m Fig.

10, and looking pended arrows; t

Fig. 13' is a detail horizontal sectional in the direction of the apview taken through the receiver and grip and magazine features, common to both.

forms of construction, upon the line a2 m Fig 10 and looking in the direction of the appended arrows;

F ig. 14 is a detail transverse sectional view taken upon the line a2 w ,'Fig. 10, showing features common to both forms of construction, and looking in the direction of the appended arrows;

Fig. 15 is a combined top plan and longitudinal sectional View, taken upon the line a2 w Fig. 10, and looking in the direction of the appended arrows;

Fig. 16 is a detail transverse sectional View taken upon the line wm Fig. 2, and looking in the direction of the appended arrows.

Fig. 17 is a fragmentary side elevation of a fire arm organized in accordance with the invention, parts being broken away and sectioned for. clearness of illustration, the safety being shown in this figure as slightly retracting the hammer to withdraw the firing pin from the cartridge; and

4 ig. 18 is a central vertical sectional view of the magazine taken on the line a3 0c Fig. 13 and looking in the direction of the appended arrows, magazine features other than the casing being removed for clearness of illustration. 7

Corresponding parts in all the figures are designated by the same reference characters.

Referring with particularity to the drawings, the improved semi-automatic fire arm disclosed therein as embodying the invention in one form, in all the figures of the drawings with the exception of the featuresof modification hereinafter pointed out as pertaining to Figs. 10, 11, 12 and 15, is organized as follows:

The receiver A includes a grip or handle portion a, which is formed hollow or chambered to receive the detachable magazine such receiver likewise carrying the usual trigger guard 16, and being provided with parallel spaced ways 17, accommodating the breech block B which is provided with longitudinal feathers or splines 19 taking into the ways 17 and holding the receiver and breech block in proper assemblage, but permitting longitudinal play of the breech block under the recoil action of the cartridge discharge and in the cartridge ejecting and cartridge feed andhammer cocking operations.

The trigger a is provided with a grip portion accommodated within the guard 16, and adapted to be retracted against a coil spring 21. This trigger a is provided with an elongated trigger body 22 integral with the grip portion 20, the body portion 22 being slidable in an elongated slot 23 in the base of the receiver A, above the guard 1o, andv having two lips 24 and 25 holding the trigger against vertical displacement, re-' spectively by an engagementwith an overhanging lip 26 and a bridge piece 27the formation of which enters into the means for 31 upon the trigger body 22. and behind the same, and may, in certain phases of the op eration of the fire arm, come into position superposed upon the trigger body, as hereinafter set-forth. 1

The rearward end of the trip bar 28 rests upon a spring-actuated plunger pin 32 mounted to play forwardly and upwardly within the receiver, in a suitable chamber provided in a boss 33 projecting inwardly from the respective side of the receiver. The plunger pin 32, because of its oblique disposition, causes the trip bar 28 not only to rock upon its center 29, but to Play lengthwise and thus assume its forward position over-lapping the trigger and ready to drop behind the shoulder 31 when the trigger has been released. The breech block B, which is chambered lengthwise in accordance with the usual custom to accommodate the several working parts and features, including those hereinafter pointed out, carries the sear 34 which is held. in positionbetween an abutment 35 upon the same side of the breech block and a, coiled compression spring 36'which holds the sear, against the abutment (see Fig. 9). The sear is mounted pivotally upon the bearing pin 37 which is journaled in the respective side wall of the breech block. WVhen the breech block is in its extreme forward position upon the receiver the trip bar 28 at its rearward end 28 occupies a position to slightly underlap the sear 34 at the downwardly ranging foot 34 thereof, such foot being curved at its lower surface and projecting laterally. inwardly of the breech block for co-engagement with a nose 38 upon the hammer shank38 of the hammer 38, such hammer being provided with the usual roughened or knurled 'finger piece or cooking portion 38. The hammer is pivotally connected as at 38 with the rearward end of the firing pin 39 which plays within the firing-pin chamber 34 in the breech block B; the firing pin being surrounded, by a coiled compression spring 39 the forward end of which bears against'the firing pin nose 39, and the rearward end of which bears against a loose collar 39 provided with a projection 39 entering an opening 39 in the top of the rearward portion of the breech bl0ck,'t0 cause compression of thecoil spring 39 upon retraction of the' breech block, which compression is utilized to drive the firing pin against the cartridge when the hammer is released.

The hammer 38 is pivoted in the rearward,

end portion of the breech block upon a removable center pin 38 taking into opposed openings in both side walls of the breeah block. A safety device C is mounted in the receiver A and consists of a plate 40 mounted upon a transverse detachable pivoted center pin 4:0 accommodated in registering.

openings in the walls of the receiver A said plate 40 ranging transversely of the grip portion of the receiver andgenerally vertically thereof, the lower end portion beneath the pivotal center 40 being urged forwardly by a compression spring 40 bearing against the rearward grip wall, and'the upper portion of the plate 40 being formed into a rear- Wardly and upwardly sweeping curved cam head 40, which is disposed rearward of the hammer shank 38 and the end 38 thereof. The pivotal center at 38 of the hammer is above the cam head 40; and when the breech block is moved rearwardly upon the receiver, a cocking action of the hammer is produced by the co-ac'tion of the end 38 with the cam head 40. In order to slightly space the firing in nose 39 from the cartridge in the barrel D, when the hammer is down, and prevent any inadvertent explosion of the cartridge at that time, the safety plate 40 may be slightly pivotally swung upon its center at 4:0" by means of the safety button 40' whic'h'is mounted to play generally in an upward direction in the rearward portion of the grip a, being provided with a T-headed shank 4-0 playin' in the slot ac in the grip wall, such T-hea cooperating with the walls of an .elongated slot 40 in the lateral flange 40 upon the cam plate 40. When the end that has the button 40' is raised the cam head @0 is urged forwardly in the receiver to slightly cant the'hammer 38 through its shank 38 and slightly space the firingpin nose 39 from the cartridge in the barrel. D. A breech block locking finger 40* is carried by the shank 40 and the button 40., such finger being adapted-t0 take into a notch or recess 40", in the sidewall of the breech block B, when the button 40' is in elevated position (see Figs. 10 and 14), thus preventing the retraction of the breech block, and

also preventing the firing of a cartridge, through the cooperation of the cam head 40 and the hammer shank end 38. The lateral flange 40 (see Figs. 6, 7 and 14) upon the cam plate 40 carries a nose l0 which is. adapted to obstruct the hammer shank 38 so as to prevent the play of the hammer from cocked position, when the button 40' is in elevated position, such nose 40 to that end engaging with an abutment 40 upon the hammer shank foot 38, there beinga recessor path LO provided in the shank 38 just above such abutment 40, and through which the nose 4C is accommodated in the pivotal play of the hammer when the button 40' is in depressed position.

The barrel D is provided at its rearward end with a downwardly projecting head 50 which takes into a notch 27 in the bridge piece27 beneath which, as above described, the lip25 upon the trigger body 22 is confined to play; and such rearward end of the barrel is introduced within the breech block B, the barrel first being passed at its forward end through a collar 60, constituting means for holding the barrel and breech block in assemblage. The breech block B applied to the receiver at the rearward end thereof, is moved along the ways 17 until it comes over the rearward end of the barrel and the collar 60, the head 50 having first been introduced within the notch 27 in the bridge piece 27 and a catchhead 60 upon .the collar 60 being brought into position to engage with a complementary recess 6O formed in a rib 60 on the lower portion of the forward end of the breech block B. The barrel is now held in assemblage with the receiver and the breech block by means of the head 50 and the catch head 60. Prior to such final assemblage of such features a coil compression spring 60 is introduced within the collar 60, surrounding the barrel D, bearing at its forward end against an 45 end flange 60 upon the collar 60, and at its rearward end against a shoulder 60 formed by enlarging the rearward end of the barrel D; the collar 60 being of such greater internal diameter than the external diameter of the barrel D as to provide an annular interspace- 6O accommodating such spring. Upon the rearward end of the collar 60, at the lower portion thereof, is formed an apron 60 which underlies at its lateral edges the feathers or splines 19 upon the breech block, at the forward ends thereof, producing an inter-locking arrangement which prevents upward displacement of the collar at the rearward end thereof, the forward end of course being held. in position by the catch head 60 and the collar being thus held in proper position under urgence of the coil spring 60?. The spring 60 likewise opposes the recoil action of the breech block, the barrel D being held against move trigger body, so that the trigger body upon the further retraction of the trigger, passes beneath such head 28 preventing any further rocking of the sear 34 by the rearward end 28 of the trip bar 28, until the pressure upon the trigger has been relieved and the trigger has advanced so that the head 28 may fall into its position behind the shoulder 31, whereupon a succeeding pull of the trigger may cause actuation of the sear 3 1 releasing the same from the head 38 upon the hammer 38, and permitting the spring 39 to actuate the firing pin 39 and fire a fresh cartridge. Thus the trigger must always be released after it has once been pulled to fire a cartridge before another cartridge can be fired due-to a succeeding pull upon the trigger. This establishes the semi-automatic character of the fire arm,

preventing an automatically produced sequence of cartridge discharges which would tend to. throw the muzzle of the fire arm upwardly unless means were otherwise provided to separate such discharges.

Mounted in a small chamber in the breech block B at the same side thereof as the sear 34:, is a pivoted extractor 71, upon which acts a coil compression spring 72 urging the hooked outer end 71 of the ex tractor, which lies within the bore of the barrel D, inwardly to engage the rim of a cartridge. This chamber 70 is at one side of the firing pin chamber 34* the barrel D being notched or recessed as at 71 at the corresponding side to admit the head of the extractor, which likewise is positioned at the to that at which the sear trip bar 28' is disposed, and in such position that when the breech block is retracted under recoil action subsequent .to firing of the cartridge, it comes into registration with the rearward portion of the ejection opening 71, so that the empty shell, then freed from the barrel by the extractor 71, upon being brought into engagement with the ejector 80 and the bev-' eled forward face 80 thereof, is deflected front end first and thrown out' through the ejection opening 71. The ejector 80 is provided with a shank 80 which is seated in a boss 80 upon the re ective wall of the receiver, the body of sald ejector having a flat face bearing ainst the adjacent wall of the receiver an? preventing play .of the ejector in the boss.

The magazine 6 consists of a suitable elongated case 90 within which the .cartridg'es are stored in staggered relation to be fed to the breech block B successively alternating with the ejections of empty shells therefrom, in the well known manner.- The shells are fed to the breech block by the usual pressed magazine follower 91. Each shell, after its introduction to the breech block, is carried forward into the barrel as the breech block returns to its advanced position, the rim of the cartridge passing the yielding extractor head 71* and seating against the breech block wall 71 at the forward end of the firing pin chamber 34 in position to be engaged by the firing pin nose which strikes the same through the contracted forward orifice of the firing pin chamber 34*. The fresh cartridges are swept successively from the feeding end of the magazine by the wall 71 of the breech block.

The magazine I) is held detachably in position in the grip a of the receiver by a pivoted catch 90" mounted upon a detachable center pin 90 received in the slotted lower forward end wall of the grip a, such catch being provided with a nose 90 taking into a catch opening 90' in the forward wall of the magazine casing 90. The nose 90 has a lip 90 against which bears a compression spring 90 also bearing against the wallsof the grip, to hold the nose 90 in the catch opening 90*. At the opposite side of the center 90 is provided a finger piece 9O lying within a recess 90* in the grip wall, and which, when pressed upon, forces the nose 90 from the catch opening 90, to free the magazine I). The finger piece lying within a depression, it is not liable to be inadvertently borne upon to disengage the catch from the magazine, it requiring a definite voluntary finger pressure to so move the catch and free the magazine.

'In the modified form of construction shown in the Figs. 10, 11, 12 and 15, the general construction and organization of parts and members is the same as that in the other figures and as herein above disclosed. However in substitution for-the directly transverse notch 27 in the brid e piece 27 I provide thesame bridge piece 2 or a bridge piece 27 having the same general function, but form therein an obliquely or diagonally ranging notch 27 L which receives the downwardly projecting head 50, upon the barrel, such head being beveled at its side faces so as to fit the notch 27", and traverse the same to cause slight axial rotation of the barrel upon the retraction of the breech block. The barrel carries at its inner. end directly above the head 50 a'supplementary head 50", which takes into arecess 50 in the breech block, locking the barrel and breech block together for joint movement upon the retraction of the breech block, until the cam action of the head 50" in the notch 27 axiallytwists th barrel and frees the head 50* from the notch 50, so that the breech block can complete its retractive movement, under recoil, and leave the barrel, such further retractive movement of the breech block'being permitted, without retraction of the barrel, by an elongated slot 50, formed in the breech block and connecting with the recess 50, and in which the supplementary head 50 is chambered during the relative move-- ment of the breech block and the barrel. The object of this accompaniment of the early stage of retractive movement of the breech block by rearward movement of the barrel is to cause the shell to be reinforced by the barrel at the early stages of the rearward movement of the breech block and the barrel, directly after explosion has taken place, thus to prevent bursting of the shell, particularly in the use of large caliber ammunition. In the use of shells of smaller caliber, say up to 28 and 32 caliber, this protection o theshell against bursting immediately after firing is not found necessary.

The breech block B is provided from a point adjacent to its rearward end, and to its forward end, at the top, with a relatively broad flat surface 100, at the forward termination of which is preferably provided a sight 100 such broad flat top surface 100 dying off at its rearward termination as at- 100 into the remaining portion of the breech block formation, and being utilized as ,a quick-sighting device, which, when its plane is brought down to invisibility upon depression of the forward end of the fire arm indicates point-blank sighting. I

The operation, method of use, mode of assemblage and disconnection or taking down of parts and features, and advantages of the improved fire arm will be readily understood from the foregoingdescription, taken in connection with the accompanying drawings and the following brief statement:

With a cartridge in the barrel, as indicated in the dotted lines in. Fig. 2, the .trigger will'just have been pulled upon to remeans of the trip bar 28, and the hammer will have fallen, the firing pin having been brought into contact with the shell to explode the same. Immediately now the recoil due to such explosion causes the breech block to travel rearwardly upon the recei er, in the form of construction shown in Fig. 2 leaving the barrel immovable, and inthe form of construction shown in Fig. 10 retracting the barrel a short way with the breech-therethrown the same outward through the shell scribed. After the breech block has moved sufficiently rearwardly, the extractor 71 ,wilL

have withdrawn the empty cartridge from the barrel, and the ejector 80 will have ejection opening 71. Retraction of the breech block, under recoil, causes the hammer 38 to tilt or cock upon its center 38 due to engagement of the foot 38 of the hammer with the cam surface 'of the' cam head 40, of the safety plate 40, until the foot 38 shall have been brought into engagement with the sear 3-1, to look the hammer in cocked position, with the firing pin 39 retracted and the spring 39 thereof compressed. As the breech block com-- mences the forward movement, of its excursion, under action of the coil spring the breech block wall 71 sweeps from the magazine b a fresh cartridge" which rises into the breech into position to be introduced within the barrel, such cartridge taking up its final position with its rim engaged by the head '7 1 of the extractor 71. The parts of the fire arm are now in position for firing, and this is effected by first releasing and then pulling upon the trigger a to cause the release of the hammer from the sear in the manner above described. Thereupon the same sequence of actions again takes place.

The safety device C is utilized, by elevating the button .40, to move the hammer and firing pin into a slightly cocked position, preventing any working engagement of the firing pin nose with the cartridge to explode the latter until such button has again been depressed. Likewise when the said button is in elevated position the breech block cannot be moved upon its ways on the receiver due to the action of the locking finger 40 with thebreech block in the locking recess 40". Also, when the hammer is cooked, the button 40 of the safety may be thrown up to bring the nose 40 into position to prevent the fire arm from being discharged, such nose interfering in this position with the necessary movement of the hammer, at the foot 38 thereon. The cam head 70, upon movement of the breech block, so depresses the rearward working end of the sear trip bar 28 that release of the trigger, above which the forward end or head 28 of such bar becomes positioned, is made necessary, in order that the fire arm may again be discharged, through release of the hammer from the sear by such sear trip bar. I

All of the several parts of the improved fire arm are held together and in assemblage by detachable centers, which may be driven from their homes or working positions by any convenient implement or improvised tool, thus making it unnecessary to have at hand a special kit for this purpose, or to have to resort to the equipment of a shop. This is of particular advantage in the field, rendering it unnecessary to transport particular paraphernalia for the taking apartof the fire arm for purposes of repair or replacement of. parts should such be rendered necessary, and more particularly for the cleaning of the fire arm. he entire fire arm can be assembled by hand and thecenters replaced by the fingers without the use of any tool whatsoever.

The fire arm is relatively simple in construction and organization when its completeness of function and positiveness and efficiency of action and many features of control and safety are taken into consideration. It is manifest that many variations may be made w th respect to provision, construction, formation, association and assemblage of parts, members and features, in practice of the invention and in departure from the foregoing description and the disclosure of the accompanying drawings, all

without departing from a fair interpretation of thefspirit of the invention.

Havin thus disclosed my invention, I claim and desire to secure by Letters Patent:

1. In a fire arm, a hammer, and a safety device cooperating with the hammer to cook the same; said safety device being adapted to lock the hammer in either its full cocked or normal resting positions.

2. In a fire arm, a hammer, a sliding breech block, a receiver on which the sliding breech block is adapted to reciprocate, a pivoted safety device adapted to engage the hammer, and means whereby said safety device may be manually operated to actuate the hammer.

3. In a fire arm, a pivoted safety device, a sliding breech block, a slidable safety button connected with the pivoted safety de vice, and means for locking the sliding breech block and elevating the hammer upon actuation of the safety button, substantially as set forth.

'4. In a fire arm, a sliding breech block, a

hammer, and a safety device adapted to cooperate with said hammer; said safety device being pivotally mounted and adapted for movement to move the hammer from its normal position.

5. In a fire arm, a hammer, a safety device which cooperates with the hammer, and means of connection between the hammer and the safety device; said safety device means of connection between the hammer and the'safety device; said safetydevice comprising a ivoted member provided with a cam sur ace which cooperates with the hammer in cocking action, means normally urging said cam surface in a direction away from the hammer, and means for moving said cam surface in the opposite direction to retract the hammer to safety position, said last named means comprising a slidably mounted button; said button being provided with a breech block locking finger.

8, In a fire arm, a hammer, 'a safety device which cooperates with the hammer, and means of connection between the hammer and the safety device; said safety device comprising a pivoted member provided with a cam surface which cooperates with the hammer in cocking action, means normally urging said cam surface in a direction away from the hammer, and means for moving said cam surface in the opposite direction to retract the hammer to safety position;

said pivoted member being provided with a hammer-engaging nose;

9. In a fire arm, a receiver, a breech block adapted to reciprocate upon the receiver, a barrel, a collar loosely surrounding the barrel and detachably engaging the breech block, and a catch head on said collar; said breech block being formed for engagement by said catch head to detachably lock the barrel to the breech block. a

10. In a fire arm, a receiver, a breech block adapted to reciprocate upon the receiver, a rib on said breech block, a barrel, a collar loosely surrounding the barrel and provided with a lug and detachably engaged with the breech block, and means detachably locking the barrel to the receiver; and compression means operating oppositely upon said collar and said barrel.

11. In a' fire arm, a receiver, a breech block adapted to reciprocate upon the re-' ceiver, a rib on said breech block, a barrel, a collar loosely surrounding the barrel and provided with a lug' and detachably engaged with the breech block, and means detachably locking the barrel to the receiver, and compression means operating. oppositely upon said collar and said barrel; said compression means comprising a coiled spring housed within said collar and confined between one end thereof and a portion of said barrel.

a 12. In a fire arm, a receiver, a hammer, a scar cooperating with the hammer, a trigger, a scar trip operated by the trigger, a

traveling breech block, and means operated in the travel of the breech block to throw the sear trip out of operation to be restored thereto only upon trigger release; said sear trip being pivoted between its ends on the receiver, one end thereof being adapted to engage said trigger and the other end thereof being adapted to engage said sear.

13. In a firearm, a hammer, a sear co operating with the hammer, a trigger, a scar trip operatedby the trigger, a traveling breech block, and means operated in the travel of the breech block to throw the sear trip out of operation to be restored thereto only upon trigger release; said sear trip comprising a loosely pivotally mounted bar one end of which is disposed in position for engagement with the sear, and the other end of which is adapted to over-lie the trigger when acted upon by said breech block operated means.

14. In a fire arm, a hammer, a scar cooperating wrth the hammer, a trigger, a

scar trip operated by the trigger, a traveling breech block, and means operated in the travel of the breech block to throw the sear trip out of operation to be restored thereto only upon trigger release; said sear trip comprising a loosely pivotally mounted bar one end of which is disposed in position for engagement with the scar, and the other end of which is adapted to over-lie the trigger when acted upon by said breech block operated means; said breech block operated means comprising a cam' head mounted upon the breech block and brought into engagement with the sear-actuating end of said bar during breech movement; means being provided to yieldingly oppose such action of said cam head upon said trip bar.

15. In a fire arm, a hammer, a sear 00- operating with the hammer, a trigger, a scar trip operated by the trigger, a traveling breech block, and means operated in the travel of the breech block to throw the sear trip out of operation to be restored thereto only upon trigger release; said sear trip comprising a loosely pivotally mounted bar one end of which is disposed in position for engagement with the sear, and the other end of which is adapted to over-lie the trigger when acted upon by said breech block operated means; said breech block operated means comprising a cam head mounted upon' the breech block and brought into engagement with the sear-actuating end of said bar during breech. block movement; means being provided to yieldingly oppose such action of said cam head upon said trip bar; said last named means acting likewise to cause the trip bar to move lengthwise into position for further trigger actuation.

16. In a fire arm, a hammer, a sear cooperating with the hammer, a trigger, a sear trip operated by the trigger, a traveling breech block, and means operated in the travel of the breech block to throw the sear trip out of operation to be restored thereto only upon trigger release; said sear trip comprising a "loosely pivotally mounted bar one end of which is disposed in position'for engagement with the sear, and the other end of which is adapted to over-lie the trigger when acted upon by said breech block operated means; said breech block operated 'means comprising a cam head mounted upon the breech block and brought into engagement with the sear-actuating end of said bar during breech block movement; means being provided to yieldingly oppose such action of said cam head upon said trip bar;

' said last named means acting likewise to cause the trip bar to move lengthwise into gage the hammer, and a slidable safety button adapted to engage the safety device to operate the same and to engage the sliding breech block.

18. In a fire arm, a receiver,'a sliding breech block, a hammer pivoted between its ends within the sliding breech block, a safety device en' aging said hammer, a slidably mounted s fety button adapted to lock the sliding breech block and the safety device against accidental movement.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

ARTHUR JOHN SAVAGE.

Witnesses:

ARTHUR W. SAVAGE, HARRY J. HUMIHREY. 

